High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 240331
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC FRI NOV 24 2017

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS

SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE HEIGHT
OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE MORE THAN
TWICE THE SIGNIFICANT WAVE HEIGHT.

THIS HIGH SEAS FORECAST USES 1-MINUTE AVERAGE WINDS WHICH MAY BE
HIGHER THAN 10-MINUTE AVERAGE WINDS.

SECURITE

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 0000 UTC NOV 24 2017.
24 HOUR FORECAST VALID 0000 UTC NOV 25 2017.
48 HOUR FORECAST VALID 0000 UTC NOV 26 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH FROM 30N170E TO 24N170E TO 15N167E MOVING W SLOWLY. E TO
SE WINDS 20 TO 30 KT BETWEEN 171E AND 179E N OF 15N. ISOLATED
TSTMS WITHIN 180 NM E OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 30N167E TO 15N166E. E TO SE WINDS
20 TO 25 KT FROM 17N TO 23N BETWEEN TROUGH AND 170E.
.48 HOUR FORECAST DISSIPATING TROUGH 30N169E TO 23N160E. NE TO E
WINDS 20 TO 25 KT W OF TROUGH.

.FRONT FROM 30N140W TO 25N146W NEARLY STATIONARY.
.24 HOUR FORECAST FRONT FROM 24N140W TO 18N144W...MOVING E AS A
COLD FRONT.
.48 HOUR FORECAST FRONT FROM 20N140W TO 18N142W.

.TROUGH FROM 20N142W TO 13N142W TO 06N143W NEARLY STATIONARY.
ISOLATED TSTMS E OF FRONT AND WITHIN 120 NM W OF TROUGH.
.24 HOUR FORECAST TROUGH MERGED WITH FRONT DESCRIBED ABOVE.

.TROUGH FROM 14N147W TO 08N150W NEARLY STATIONARY. SCATTERED
MODERATE TSTMS WITHIN 120 NM W OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 13N144W TO 07N146W.
.48 HOUR FORECAST TROUGH FROM 13N148W TO 06N154W.

.TROUGH FROM 11N177W TO 04N172E MOVING W 10 KT. SCATTERED
MODERATE TSTMS BETWEEN TROUGH AND 179W.
.24 HOUR FORECAST TROUGH FROM 11N171E TO 05N169E.
.48 HOUR FORECAST TROUGH FROM 10N166E TO 04N167E.

.48 HOUR FORECAST NEW FRONT FROM 29N140W TO 27N152W TO 29N166W
MOVING SSE 30 KT AND WEAKENING. N TO NE WINDS 20 TO 30 KT N OF
FRONT.

.N TO NE WINDS 20 TO 30 KT N OF 26N BETWEEN 150W AND 158W. NE TO
E WINDS 20 TO 30 KT ELSEWHERE FROM 13N TO 28N BETWEEN 154W AND
179E.
.24 HOUR FORECAST NE TO E WINDS 20 TO 30 KT FROM 13N TO 27N
BETWEEN 153W AND 172E.
.48 HOUR FORECAST NE TO E WINDS 20 TO 30 KT FROM 11N TO 25N W OF
153W.

.OTHERWISE WINDS 20 KT OR LESS OVER REMAINDER OF AREA.

.SEAS 12 TO 14 FT N OF 21N BETWEEN 150W AND 160W...AND FROM 17N
TO 25N BETWEEN 160W AND 174W. SEAS 8 TO 12 FT ELSEWHERE N OF A
LINE FROM 15N140W TO 09N179E TO 19N170E...AND N OF 28N BETWEEN
160E AND 170E.
.24 HOUR FORECAST SEAS 12 TO 13 FT FROM 16N TO 22N BETWEEN 164W
AND 178W. SEAS 8 TO 12 FT ELSEWHERE N OF A LINE FROM 08N140W TO
06N170W TO 13N168E.
.48 HOUR FORECAST SEAS 8 TO 12 FT E OF 155W...AND N OF A LINE
FROM 07N155W TO 07N179E TO 15N160E.

.OTHERWISE SEAS 8 FT OR LESS OVER REMAINDER OF AREA.

.ITCZ FROM 08N152W TO 07N162W TO 09N176W. ISOLATED TSTMS WITHIN
240 NM N OF ITCZ E OF 160W.

.ISOLATED TSTMS FROM 12N TO 14N BETWEEN 160W AND 168W...AND FROM
06N TO 08N BETWEEN 163E AND 168E.

$$

.FORECASTER BRAVENDER. HONOLULU HI.


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